Preparo do solo e emissão de CO2, temperatura e umidade do solo em área canavieira

Soil tillage is one of the agricultural practices that may contribute to increase the loss of carbon through emission of CO2 (FCO2). The aim of this study was to investigate the effect of three soil tillage systems on FCO2, soil temperature and soil moisture in a sugarcane area under reform. The experimental area consisted of three tillage plots: conventional tillage (CT), conventional subsoiling (CS), and localized subsoiling (LS). FCO2, soil temperature and soil moisture were measured over a period of 17 days. FCO2 showed the highest value in CT (0.75 g CO2 m(-2) h(-1)). Soil temperature presented no significant difference (p > 0.05) between LS (26.2 degrees C) and CS (25.9 degrees C). Soil moisture was higher in LS (24%), followed by CS (21.8%) and CT (18.3%). A significant correlation (r = -0.71; p < 0.05) between FCO2 and soil temperature was observed only in CT. The conventional tillage presented a total emission (2,864.3 kg CO2 ha(-1)) higher than the emissions observed in CS (1,970.9 kg CO2 ha(-1)) and LS (1,707.7 kg CO2 ha(-1)). The conversion from CT to LS decreased soil CO2 emissions, reducing the contribution of agriculture in increasing the concentration of greenhouse gases in the atmosphere.

Antiageing mechanisms of a standardized supercritical CO2 preparation of Black Jack (Bidens pilosa L.) in human fibroblasts and skin fragments

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Ovary development in honeybee (Apis Mellifera L.) workers under co2 narcosis, caged outside of the colony

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Black liquor gasification combined cycle with CO2 capture-Technical and economic analysis

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Photoelectrochemical reduction of CO2 on Cu/Cu2O films: Product distribution and pH effects

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Chemical weathering rate, denudation rate, and atmospheric and soil CO2 consumption of Parana flood basalts in Sao Paulo State, Brazil

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

CO2 and N2O emissions in a soil chronosequence at a glacier retreat zone in Maritime Antarctica

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Field-scale spatial correlation between contents of iron oxides and CO2 emission in an Oxisol cultivated with sugarcane

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

The Ca2+-activated K+ channels play a braking role in locus coeruleus neurons during CO2 exposure

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Balanço de energia de fluxo de CO2: cerrado da floresta estadual de Assis

Based on climatological data and energy flow, this paper analyzes the behavior observed in microclimatic an important remnant of cerrado in the São Paulo State. The seasonal climate is well marked, in the study area, with two climatic periods (one dry and one wet). The vegetation presents physiology as a function of water availability and the local thermal conditions and can be seen marked changes in the landscape due to the more or less presence of solar radiation. It’s important to understand the ecosystems behave in the context of global change. It has gained the attention of many researchers in the world.

Emissão de CO2 em um latossolo vermelho coberto com palha sob aplicação de efluente e lodo de esgoto

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Coffee growth, pest and yield responses to free-air CO2 enrichment

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Variabilidade espaço-temporal da emissão de CO2 do solo em curto período sob influência de eventos de precipitação

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise termoeconômica e eficiência ecológica de uma termoelétrica com absorção química de CO2

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Emissão de CO2 do solo em áreas de restauração na Mata Atlântica

Pós-graduação em Geociências e Meio Ambiente - IGCE